{"product_id":"scientific-cutting-tools-tm345-20ha-thread-mill-7-16-20-unf","title":"Scientific Cutting Tools TM345-20HA Thread Mill 7\/16-20 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SCIENTIFIC CUTTING TOOLS TM345-20HA is a solid carbide helical flute thread mill designed for cutting 7\/16-20 UNF threads in both internal and external applications. Built from submicron-grade carbide and finished with an AlTiN+ coating, this tool delivers heat resistance and wear performance suited to production and job-shop environments. It runs 4 right-hand flutes at 20 teeth per inch, with a 0.3450-inch cutting diameter and a 0.8200-inch length of cut. Installation is performed by machinists and CNC tool-and-die professionals on milling centers capable of helical interpolation.\u003c\/p\u003e\n\u003cp\u003eThis thread mill is intended for use in CNC machining applications where a single tool must produce both internal and external 7\/16-20 UNF threads. The 3\/8-inch shank diameter fits standard ER and end-mill collet systems, and the 3.5-inch overall length provides clearance for typical workholding setups. It is well suited to threading operations in steel, stainless, aluminum, and other materials where the AlTiN+ coating provides a thermal and adhesion barrier during cutting.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCuts internal and external 7\/16-20 UNF threads with a single tool using helical interpolation\u003c\/li\u003e\n  \u003cli\u003eSubmicron-grade solid carbide construction for rigidity and wear resistance\u003c\/li\u003e\n  \u003cli\u003eAlTiN+ coating for elevated heat resistance and extended tool life\u003c\/li\u003e\n  \u003cli\u003e4 right-hand helical flutes at 20 TPI for consistent thread form\u003c\/li\u003e\n  \u003cli\u003e0.3450-inch cutting diameter with 0.8200-inch length of cut\u003c\/li\u003e\n  \u003cli\u003e3\/8-inch shank diameter compatible with standard collet toolholders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for CNC milling machines capable of helical interpolation; fits standard 3\/8-inch collet and end-mill toolholding systems. Produces 7\/16-20 UNF thread form on internal and external features.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and operation should be performed by qualified machinists on CNC machining centers with helical interpolation capability. Verify correct toolholder runout and collet torque per the toolholder manufacturer specifications before use. Ensure the spindle and coolant are off before tool changes. Confirm CAM-programmed lead-in and thread depth match the 0.8200-inch length of cut to avoid overloading the flutes.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 7\/16-20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeeth Per Inch\u003c\/strong\u003e: 20 TPI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal and External\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 0.3450 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3750 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Nominal Diameter\u003c\/strong\u003e: 0.4375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.8200 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.5000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Submicron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: AlTiN+\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23242117\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SCIENTIFIC CUTTING TOOLS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: TM345-20HA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCIENTIFIC CUTTING TOOLS","offers":[{"title":"Default Title","offer_id":52077678002482,"sku":"TM345-20HA","price":276.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/24643921f5db7b36eb6ec69ad783d00a.jpg?v=1790053596","url":"https:\/\/voomisupply.com\/products\/scientific-cutting-tools-tm345-20ha-thread-mill-7-16-20-unf","provider":"Voomi Supply","version":"1.0","type":"link"}